?? example5_2.java
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package calculatorExample;import java.awt.*;import java.awt.event.*;import java.applet.*;public class Example5_2 extends Applet implements ActionListener,MouseListener{ private Button But; String str; String mouseClickCnt="單擊"; Dimension currentPos=new Dimension(); int clickCnt=0; public void init(){ But=new Button("按鈕"); setLayout(new FlowLayout()); add(But); But.addActionListener(this); But.addMouseListener(this); addMouseListener(this); } public void paint(Graphics g){ str=new String("單擊了"+clickCnt+"次按鈕"); g.drawString(str,10,40); g.drawString("鼠標(biāo)"+mouseClickCnt+"位置：（"+currentPos.width+"," +currentPos.height+")",10,70); } public void actionPerformed(ActionEvent e){ if(e.getSource()==But){ clickCnt++; repaint(); } } public void mouseClicked(MouseEvent e){ currentPos.width=e.getX(); currentPos.height=e.getY(); if(e.getClickCount()==1) mouseClickCnt="單擊"; else mouseClickCnt="雙擊"; repaint(); } public void mousePressed(MouseEvent e){ } public void mouseReleased(MouseEvent e){ } public void mouseEntered(MouseEvent e){ } public void mouseExited(MouseEvent e){ }}?? 快捷鍵說明
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